86829919 has 4 divisors (see below), whose sum is σ = 94723560. Its totient is φ = 78936280.

The previous prime is 86829907. The next prime is 86829961. The reversal of 86829919 is 91992868.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86829919 - 2¹⁹ = 86305631 is a prime.

It is a super-2 number, since 2×86829919² = 15078869667093122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86829619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3946804 + ... + 3946825.

It is an arithmetic number, because the mean of its divisors is an integer number (23680890).

Almost surely, 2^86829919 is an apocalyptic number.

86829919 is a deficient number, since it is larger than the sum of its proper divisors (7893641).

86829919 is a wasteful number, since it uses less digits than its factorization.

86829919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7893640.

The product of its digits is 559872, while the sum is 52.

The square root of 86829919 is about 9318.2572941511. The cubic root of 86829919 is about 442.8158239881.

The spelling of 86829919 in words is "eighty-six million, eight hundred twenty-nine thousand, nine hundred nineteen".